No start condition [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: No start condition


tigman
11-27-2006, 02:12 PM
:mad: This morning my truck don't want to start.

My fuel is supply with a electric pump and i read 4-7 psi at the entrance of the IP .

There is 12V on the IP pink wire and when i crack the injectore fuel is comming out :eek: .
And the batteries ares fine and the starter start like a champ. but still no fire up :think:

Did i miss something or my IP is dead .

How to check it on the truck before removing it


ED

rock_shoes
11-27-2006, 02:28 PM
Sorry to be the one to state the obvious but you didn't mention if the glow-plugs are working. Sure you've already checked that.

High Sierra 2500
11-27-2006, 06:04 PM
This morning my truck don't want to start.


Your truck won't start?!!!! What is the world coming to? :eek:

Sorry to be the one to state the obvious but you didn't mention if the glow-plugs are working. Sure you've already checked that.


Like he said... Although I am sure you have already checked them as well.

My fuel is supply with a electric pump and i read 4-7 psi at the entrance of the IP .

There is 12V on the IP pink wire and when i crack the injectore fuel is comming out

That is the unusual part... You would think that if something was wrong with the fuel system you wouldn't see any fuel. It does seem to have compression, right?

You could try spraying WD-40 in the intake... It should fire up on that. If it does fire up, that means the problem is indeed in the fuel system.

You can test the injection pump by eliminating all of the other factors in the fuel system... Hook up a fuel line directly to the injection pump. Put the end in a can of fresh diesel. If you really want to get fancy you can put a small electric pump in the line, just make sure it is in good working order.

Hope you get it fired up pretty soon... :)

tigman
11-27-2006, 06:30 PM
rock_shoesSorry to be the one to state the obvious but you didn't mention if the glow-plugs are working. Sure you've already checked that.

Don't be ,i happend to replace the controller yesterday because they did not work for 1 week :eek: .but it start whitout them easilly even in the morning at 35-40F

High Sierra 2500
Quote:
My fuel is supply with a electric pump and i read 4-7 psi at the entrance of the IP .

There is 12V on the IP pink wire and when i crack the injectore fuel is comming out
That is the unusual part... You would think that if something was wrong with the fuel system you wouldn't see any fuel. It does seem to have compression, right?


What if the pressure at the exit of the pumpe is too low and and make the injectors to open??

Yes there is compression . But no big smoke at the muffler when i crank , just little grey smoke

You could try spraying WD-40 in the intake... It should fire up on that. If it does fire up, that means the problem is indeed in the fuel system.

No fire up on WD-40 but actually i try it before and it never do, i suspect the Canadian WD-40 is not the same as your's and i'm not willing to put ether in it

If you really want to get fancy you can put a small electric pump in the line, just make sure it is in good working order

That's my permannent setup:D

High Sierra 2500
11-27-2006, 10:12 PM
What if the pressure at the exit of the pumpe is too low and and make the injectors to open??


That's really the only thing it could be... Injection pump problem of some sort or other...

Maybe you should try swapping out the injection pump... Seems to me you should have a spare after what happened to your other truck... ):h That makes it convenient.

No fire up on WD-40 but actually i try it before and it never do, i suspect the Canadian WD-40 is not the same as your's and i'm not willing to put ether in it


I think the WD-40 formula must have changed recently. Doesn't seem to be what it used to be... Maybe it doesn't work for starting diesels anymore. Haven't tried it recently, so I don't know for sure.

tigman
11-27-2006, 10:52 PM
Actually i have 2 spare pumps but no free time to do the swap thing:(

If you look on the passenger fire wall you see the electric pump .

Hook up a fuel line directly to the injection pump. Put the end in a can of fresh diesel. If you really want to get fancy you can put a small electric pump in the line, just make sure it is in good working order.


Basic , alway stick to the basick .Thank's , i forget sometime about that

I try an old trick and it work ;) i mix 50%automatic trans oil with 50%fuel and i pour in the pump after little cranking it start like a champ:D .

So for now i found 2 possibilitys conaminated fuel , i already purge the fuel out 10G+8G and fillup with new fuel .

or

My special mix will make my IP work for couples days and in 2 weeks i do the swap:D .but for that periode of time i add more auto tranny oil to my fuel if it die in couple of days

Ed









http://i68.photobucket.com/albums/i29/tigman_photos/WVO017-1.jpg (http://i68.photobucket.com/albums/i29/tigman_photos/WVO017-1.jpg)
(Image has been resized. Click it for full size.)

High Sierra 2500
11-27-2006, 10:59 PM
I'll be interested to see what happens...

I like your "dryer vent" intake setup... :)

tigman
11-29-2006, 10:51 PM
After 2 days of testing : the engine only start on my special mix and run great after that, but if i stop it on diesel it wont start when cold again .

Until i put in special mix directly in the IP

But the strange part , it start fine when hot.

Diag ; IP destroyed

rock_shoes
11-30-2006, 05:28 AM
What does the ATF do that allows the truck to start? Does it change the flashpoint of the diesel? Just curious how some of the tricks work.

High Sierra 2500
11-30-2006, 10:00 AM
It increases the viscosity of the fuel without making it harder to ignite... Worn out injection pumps like thick fuel.

rock_shoes
11-30-2006, 03:16 PM
It increases the viscosity of the fuel without making it harder to ignite... Worn out injection pumps like thick fuel.

So would a worn out pump actually run better on warm veggie then?

High Sierra 2500
11-30-2006, 06:06 PM
Yep, it sure would...

tigman
12-03-2006, 09:47 PM
Finally back to life with a brand new second hand IP :D .

Actually i put the one with 34900km on WVO ,to continue the experimentation on how long a pump can survive with WVO


The only issue ,my temp gauge now is off by +20F .i double check with a digital gauge to find out.

Ed

PS :It's so much easyer to work on diesel:D :D :D

High Sierra 2500
12-03-2006, 10:00 PM
Glad to hear it is back in good running condition! :)

I'll be interested to see how long that pump lasts on WVO. I think that so long as the oil is good and clean, the lifespan of the pump should be similar to (or longer than) the lifespan of a pump running on standard diesel...

PS :It's so much easyer to work on diesel

I definitely agree! :cool2:

tigman
12-06-2006, 10:22 AM
But it'.s so frustrating when it stall :mad: ,at work it front of my studentsCensored .I'm sure i will ear of my no start for the rest of the year 2007.

condition 25F hard to start in mornig but it fire . but last night only 4 gp was working and it don't want to fire at all .
After 2 hrs of engine heater , no go so i pull the acetylene torch and heat the intake and throw open flame in the intake finally it fire .

I pull the glow plug out . only 5 came out easyly 2 come out the hard way and 1 (tip) brake into the head :mad:

I will have to pull the head next weekend:crazy: :drinking:


I think i will start drinking soon:D


Ed

78Chev6.2
12-06-2006, 02:26 PM
A few people have removed the broken tip of a glow plug in the pre-cup through the injector hole using a greased finger.

tigman
12-06-2006, 04:22 PM
I'm so frustrated i forgot about that one:thankyou2 :duh: :hail:

Always start by the basic

I try it when i get home tonight

Ed

PS The frustration come from 3 weekend in row working on that truck.My kids will call the milkman dad soon

tigman
12-10-2006, 02:11 PM
Hi after a 4th weekend in a row under the hood ,it's done ,all tear down and up , , again.:D .
I pull out the glowplug tip ,inspect the heads they are ok but the driver one come from a 83 engine :eek: , big treads injectors:( .

Everytrhing else look ok even the sanding cross patern on the cylinder wall look fine:D
I put a set of 11g until my new 60g come home from e-bay($60 incl shipping) and i install new bolts/head gasket(fel-pro).

It start like a champ once again :D .

Ed

tigman
12-10-2006, 09:51 PM
Hi after a little trip (30miles) for testing my job i notice that the engine sounds different at 60mph.
No issue at all ,just a earing thing :cool: . the knocking sound louder but the timing is fine .

i have to replace my glowplug controller i install 2 weeks ago from a shelf is was full of water inside when i open it up:eek: , it cant hold the power of 8 new plug and click,click,click.

I install the one i overall 2 weeks ago and i take pic of the defective one on overall process.

Pull apart the pcs by removing the 2 screws under the steel plate . Beware about the little spring at the bottom of the coil between the 2 contact pushing the contactor, it can fly :D


http://i68.photobucket.com/albums/i29/tigman_photos/WVO026.jpg

http://i68.photobucket.com/albums/i29/tigman_photos/WVO028.jpg

The defective contactor.just flip the copper tab upside down and file the 2 contact bolts


http://i68.photobucket.com/albums/i29/tigman_photos/WVO033.jpg

put everything back the same way it come out , put sealer to prevent water infiltration